Water-cooling system for combustion-engines.



I. MULLER.

WATER COOLING SYSTEM FOR COMBUSTION ENGINES. APPLICATION FILED APR. 8.1913 Patented Mar. 21, 1916 Janos Mouse, or wrnrnnrnun, SWITZERLAND,ASSIG-NOR- re Boson-suntan s ncs.- nrnsnn nnernn COMPANY, or en. LOUIS,rrrssounr, a conrona'rron or rarssoosr.

WATER-(396L113 (El-SYSTEM FOR GQMBUSTION-ENGINES.

Specification of Letters Patent.

To all rv/tom it may concern:

Be itlrnown that I, JAnon lvlr'innnn, engineer, a citizen of theRepublic of Switzerland, and residing at Winterthur, Canton of Zurich,Switzerland, have invented the following described new and usefulTmprovements in Water-Cooling Systems for Combustion-Engines,

This invention relates to the water-cooh ing of internal combustionengines, especially on vehicles and vessels, and consists in acirculatory system common to two or more engines or power groups andincluding provisions whereby the course of the cooling fluid can becontrolled at will.

The object of the invention is to enable the cooling fluid to be used inthe most economical way, this being a matter of importance on vehicleswhere the amount of cooling water that can be carried is limited andalso on vessels which may operate in water unsuitable for enginecooling, to enable the character of the circulation to be changed inaccordance with difierent conditions or the special end in view, and tomake it possible to cut one or more of the engines or parts entirely outof the circuit.

The accompanying drawing illustrates semi-diagrammatically an embodimentof the invention as applied to a locomotive.

In this application of the invention two engines or power groups areshown, the one, designated 10, being the engine that drives the vehicle,and the other, designated 11, being an auxiliary engine, which may beused for producing compressed air for braking and for injecting fuelinto its own power cylinders 12', 13, is, and into the cylinders 15, 16,of the main engine. and also for water delivery and electric light andpower. It is shown as including a multi-stage air compressor 1'2, whichmay of the construction well known in connection with Diesel engines,and as driving an electric generator 18. The engines may Diesel enginesor of other suitable type, 7

Both engines are included in a common circulatory system, havi areservoir 19 for holding the greater part of the cooling medium. rromthis vessel the water passes through a main supply pipe 20, is caused tocirculate by the impelling action of a pum 21. i riety of courses forits flop: are provided system of p ping and 7,, 1 Y 4 4," varies,whereby the water alter p ing through the cooling spaces of one or moreof the motors or power units, that is to say,

their cylinders, water-jackets, cylinderheads, pistons, etc., isconductedte the inflow pipes of the other motor or cylinders, beforereaching the main return pipe 22, or whereby the fluid may be circulatedin a plurality of paths through the spaces of the different enginesconnected as it were in parallel, or through part of the spaces or oneof the engines to the exclusion of the remainder.

The inflow-pipes of the main engine cylinders and 16 are indicated at23-, er. The water thus admitted flows through the water-jackets in thecylinders and cylinder heads, and may also flow through the pistons, inaccordance with well lrnown internal combustion engine construction, andmakes its exit through. the outflow pipes 25, 26. The cooling spaces ofthe power and compressor cylinders, 12, 13, 14- and 17, are shown ashaving a common inflow pipe 27, with branches leading to the severalcylinders, and outflow branches uniting into a common outflow pipe 28, asuitable place on the vehicle is a radiator or apparatus 29 forextracting the heat from the water, one radiator being preferablyemployed for the system, though there might be two or more connected atdifferent points; The several outflow pipes join into a main outfiowpipe30 leading to this radiator, and from the radiator the main return pipe22 leads back to the reservoir.

Valves 31, 32, 33, of the character indicated, control the severaloutflow pipes 25,

26 and 28. By means of these organs the respective engines or cylinderscan be connected with or out of from the return side of the maincircuit; or by suitable setting of these valves, in conjunctionwith'valves 34s, 35, 36, the outflow of (mo or more of the parts may bedirected to the inflow pipes of certain of the other parts to be cooled.Valves 37, 38, and also valve 36, having passa es as indicated, serve tocontrol the distribution of iud to the various inflow pipes.

will be understood of course that the speciiic arrangement of valves anhe considerably varied mode of describing the arr nient shown, certainof the possible pa s ror circulation if) T supplyipipe and pump 21,,through the liquid passes from main supply pipe 20 and pump 21 throughthe valve 37 to pipe 39 and thence to the inflow pipe 27 of theauxiliary engine 11. \Vith the valve 33 set as shown, the outflow fromthis engine cannot pass to the radiator 29, but is directed through pipe40 to inflow pipe 24 of main engine cylinder 16. Valve 36 being set asshown all the flow passes through the spaces of this cylinder,andthrough its outflow pipe 26. The valve 32 controlling this pipe doesnot permit the fluid to pass to the radiator and thence to the'mainreturn pipe, at this time, but directs it into the pipe 41, from whichit flows through valve 35, in the position shown to pipe section 42, andthence byway of valve 34 to pipe 47, and through valve 36 to pipe 43,and thence by way of valve 38 to the inflow-pipe 23 of main enginecylinder 15. From the outflow pipe of this cylinder the water flows pastthe valve 31 to the pipe leading to the radiator, whence it finallyreturns by pipe 22 to the reservoir.

Another mode of circulating the fluid is as follows, the valves beingset in the obvious appropriate manner: from the main valve 37, which isturned to cut oil the pipe 39, to the valve 38, which is turned so as tocut'ofl the pipe 43, and todirect the flow to the cooling spaces of themain engine clyinder 15, thence by way of'outflow pipe 25 and valve 31to pipe 44, through valve 34, to pipe section 42, thence through valveto pipe 45, thence to the inflow pipe 27,0f the auxiliary engine, thenceby way I of the outflow pipe 28 and valve 33 to pipe 40, leading toinflow pipe 24 of main engine cylinder 16, from which the water passesby way of outflow pipe 26 and valve 32 to the.

pipe 30 and thence to the radiator, whence it finally returns to thereservoir; By an appropriate'setting of the valves the fluid can becaused to pass first through the cool-' ing spaces of the main enginecylinder 15, thence by way of pipe 25, valve 31, pipe 44,

valve 34, pipe47, valve 36, pipes 46 and 24,

to and through the spaces ofmain engine cylinder 16. From the outflowpipe 26 of this cylinder the flow can be caused to pass by way of valve32 and pipe 30 to radiator 29, and thence back to the reservoir, theauxiliary engine being cut out of circuit; or, the valve 32 beingappropriately turned, the

liquid after passing through the spaces of the main engine cylinders 15,16, in the manner just described, maybe caused'to flow by way of pipe41, valve 35, and pipes" 45, 27, to the cooling spaces of the auxiliaryengine, which are thus placed in series with the main engine, thencepassing to the radiator and to the return side of the sys-' term. Themanner of causing the fluid to flow first through the cooling spaces ofthe auxiliary. engine and thence through thoseof the main engine beforereaching the main return pipe has already been described; and it will beclear that by turning the valve 33 the main engine can be cut out of thecircuit, and the medium be caused. to. pass direct from the auxiliaryengine to the radiator and thence to the return pipe 22. Furthermore,the engines can be connected in parallel. For this purpose the valve 37adjacent the pump 21 is appropriately turned so that the flow divides,part passing to the valve 38' and thence to and through the coolingspaces of the main engine, and the other part passing by Way of pipes39, 27, to the auxiliary engine The heated fluid passing from bothengines is reunited in the pipe 30, passesto the radiator and thenceback to the reservoir. The portion of the flow that passes to the mainengine under these conditions flows through the cooling spaces of itscylinders 15 and 16 in succession. However, the part of the fluid thatflows through valve 38 can be caused to pass only through the space ofcylinder 15 and thence to thereturn side of the system, the part thatflows through valve 37 branching at the junction of pipes 39, 45 and 27,one portion being led to the auxiliary engine and the other portionflowing by way of pipe 45, valve 35, pipe 42, valve 34, pipe .47, valve36 and pipe 46, to the inflow pipe 24 of the cylinder 16,- from which itpasses to the common outflow pipe 30 and thence to the radiator and backto the reservoir. Thus, the cooling medium can when desired, be suppliedto the cooling spaces of each ing medium may be circulated through thecooling spaces of the engines either individually or in series.

2. The combination of two or more multicylinder internal combustionengines having cooling spaces and a cooling system and valvedconnections whereby the cooling medium may be circulated through thecooling spaces of either engine and thence back to the reservoir orthrough the cooling spaces of the engines in series before passing tothe radiator.

3. The combination of two or more incylinder without having beenpreviously 6 therefor including a reservoir, a radiator 1118611111115only through the spaces of the other.

i. The combion with two or more internal comioustl engines or powergroups provided With spaces for the circulation of a cooiing medi a of acirculatory system and means Whey the spaces of said groups or theirmembers can be connected therewith either in series or in parallelrelation, and whereby the groups or their members can be individuallycut out of the circuit.

The combination of an internai combustion engine having a water jacket,another internal combustion engine, and means for utilizing the Wasteheat of the second engine to heat the fluid passed throur h said Waterjacket so as to Warm up the met engine.

6. The combination of two or more internai combustion engines havingWater Jackets, and means for connecting sald Water jackets in circuitwhereby one engine can be warmed up by the heated cooling Water ofanother.

in testimony whereof, i have signed this specification in the presenceof two Witnesses.

Witnesses @Asn Gunmen, AUGUST Roses,

